Road machine



J. B. JARMIN ROAD MACHINE June 30, 1931.

Jmes B. Jzr'mm m W mw y uw mw Q n@ N@ o QN mnu nm .MN una NM Nn .NQ wm mwm E .w

June 30, 1931. 1 Q JARMIN 1,812,342

ROAD MACHINE Filed Jan. lO, 1929 4 Sheets-Sheet 2 Y S14/manto@ j/mesfarm/n Q M MW J. B. JARMIN ROAD MACHINE June 30, 1931.

4 Sheets-Sheer,

Filed Jan. l0, 1929 June 30, 1931. A 1 B, JARM|N 1,812,342

ROAD MACHINE Filed Jan. lO. 1929 4 Sheets-Sheet 4 @figa Patented June3o, 1931 PATENT oFFlc-E UNITED STATES y JAMES B. JAR'MIN, 0F DALLAS,TEXAS ROAD MACHInE Thisl invention relates to new and usefulimprovements in road machines.

' longitudinal beams or channels spaced apart and adequately braced toendeavor to neutralize the torsional and carrying strains.

There are many-disadvantages attached to such frames.

unnecessary weight. The frames are frequently three or Jfour feet wideand with their cross braces obstruct Ythe operators view ofthe blade.The expense of constructing such frames is a large item in the cost ofproducing the machines.

One obJect ofthe in vention is to construct a road machine with a singlelongitudinal central reach of tubular or equivalent structure, wherebythe disadvantages of the usual frame are eliminated axfd a more simple,compact and less expensive blade support is produced.-

A further object ofthe invention is to provide a central longitudinalmember connecting the/front and rear axles and which will be muchstronger than theY usual frame and which will better resistv the loadand torsional strains.

Another object of the invention is to provide a supporting andconnecting member permitting of less weight in the machine, af-

y fording a better observation of the blade and work by the operator andmaking for simplicity in the assembly of the machine.

l Still another object of the invention is to provide a simple, eiicientand advantageous In order to secure strengthv heavy members must .beused and this adds Application filed January 10, 1929. Serial No.331,605.

connection of the reach and the rear platform i of the machine.

. A further obj ect of the invention is to provide a blade carrieradjusting and supporting assembly 4having a unitary mounting on the 50reach.

Further reference will be made herein to the foregoing and otherfeatures of the inven-f tion, which will be more particularly pointedout. f

In the following specification anexel'npliiication of the invention isset forth and this 'is illustrated in the accompanying drawings inwhich:

Fig. 1 is a side elevation of a road machine 30 constructed inaccordance with the invention,

Fig. 2 is a plan View of the same, Fig. 3 is an enlarged transversesectional view taken on the line 3-3 of Fig. 2

Fig. 4 is an enlarged transverse sectional 05 lview on the line 4.-4 ofFig.' 2,

Fig, 5 is a sectional view of the locking and adjusting means for theblade hanger ring,

Fig. 6 is a detail of the rear axle adjusting means,

Fig. 7 is a rear elevation of the machine,

Fig. 8 is a detail of the steering gear,

Fig. 9 is aside elevation of the same, and

Fig. l0 is a transverse sectional view showin the frame shifting means'.

n the drawings the numeral 10 designates a main vconnecting member orreach which connects the front and rear axles and constitutes thebackbone of the machine. It is the essence of the invention to form thisreach 80 as asingle central member extending longitudinally and beingtubular or hollow so as to give strength and rigidity. It is preferableto'use for'this reach a length of pipe of com-4 paratively largediameter. 85

, As an illustration, it has been found that a 12 inch pipe 16 feet longwill safely carry a load 0f.54,000 pounds and the twisting length. Amachine 'l constructed with this lsize of pipe would weigh less than10,000

` withv an annular flange 11 at its rear end which is bolted to the.fiange 12 of an elbow 13 preferably of the same diameter as the pipe.The elbow has a base flange 14/,which is secured by. bolts 15 upon arear platform 16. It is not considered necessary to go into details ofconstruction which are in com' mon use and are now being manufacturedfor 4 the trade.

It will be suflicient for the purpose of the invention to say that theplatform 16 is suitably mounted on a rear axle 17 so. as to be shiftedlaterally on said axle, whereby said axle may be swung in a horizontalplane. These'features and the means for accomplishing the results formno'.part of the invention. The rear axle is mounted 1 in ground wheels18.

, At its forward end the reach pipe 10 is c arried by a post 19 having asaddle 20 at its upper end. A-cap 21 (Figs. 3 and 9) is secured to thesaddle by bolts 22 and the forward end v of the pipe is clamped in thesaddle by the cap. The saddle and cap are provided with lugs 23 engagingin apertures 24 in the pipe,

. whereby said pipe is held against circumferential movement whenclamped in position.

.A front axle 25 is supported in ground wheels 26. An arched crossmember 27 has its lower ends secured to the front axle adjacent theground wheels. The post 19 1s formed with a circular plate 28 on itsbotv tom, whichl engages on a circular boss 29 on the member 27, wherebya turn-table is formed. A king pin 30 passes through the bosses and issecured by collars 31. A clevis plate 3 2 is loosely pivoted on the pin30 with in the post 19 and is held against upward d1 splacem'ent by acollar 33 fastened on sald Y pin, as is best shown in Fig. 3. l

A longitudinal sub-frame -34underl1es the reach 10 and has its forwardend rigidly attached to the clevis plate 32. rI his frame, by reason ofthe pivotal mounting of said plate, may be raised and lowered at itsrear-end or swung in a transverse arc on its longltudmal axis. The frameis composed of `s1de angle members extending rearwardly from the plate32 and curving outwardly from each other at their rear ends. The lrearends of the frame members are connected by a cross angle bar 35. v

Thereach 10 is alsoattached to the front portion of the rear platform 16by a standard 36 carrying a clamp 37, whereby said reach j member issecurely fastened. In order to support the rear endv of the subframe 34an adjustable hanger is fastened on the reach.

This hanger .includes a' pair oflaterally exform of castings havingsemi-circular clamp collars 39 at their inner" ends. The clamp collarsengage onl each side of the reach and are connected by top -and. bottombolts 40. As is shown in Fig. 4, each collar has a plurality of lugs 41engaging in apertures 42 in the reach, whereby the brackets aresupported against circumferential movement on the pipe.

Each bracket 38, as is best shown in Fig. 4, is bifurcated for receivinga segmental gear 43 formed integral with a rocker 44 j ournale'd on ashaft 45. Each rocker includes an arm 46 and a grooved segment 47concentric to its shaft 45. The outer end of each rocker arm carries ajournal Ybox 48 engaging in a hanger loop 49 and reccivinga transversepivot bolt 50, which is vertically adjustable in apertures 51 in saidloop whereby the hanger loop may be set at different elevations. Eachhanger loop has a universal joint 52 at its lower end which is pivotedin a box 53 secured to the rear side of the frame member 35.

It will be s een that the frame 34 is freely hung for verticaladjustmentboth longitudinally and transversely Aand also for tilting or rotativeadjustment on its longitudinal I axis. For adjustin the rockers 44 thesegmental gears 43 are riven by worm screws 54 journaled'in the brackets38, asis shown-in Fig. 4.5 Each worm screw has a bevelled gear wherebythe rocker 44 is actuated andthe hanger `loop 49 is either raised orlowered.

As will be hereinafter explained the sub-l.

frame 34 carries the scraper blade and a heavy load. In order to makefor easy adjustment of the rockers, cables 63 have their ends seated inthe grooved segments 47` and pass over pulleys 64 journaled on thebrackets 38.' Each cable is extended forwardly over the reach 10 andsecured to the rear end of a heavy coiled spring`65. -The coiled springsbare connected at their forward ends (Figs. 1

and 2) with eye bolts 66 secured in a transverse bracket 67 rigidlymounted on the reach member 10.

The springs are constantly .under tension and when the rockers areactuate'dxto lower the loops 49 the springs are further tensioned, andthus when the Aoperation is reversedto las raise the hanger loops thesprings assist the rockers in'elevating'the load. It is lpointed outthat the entlre hanger assembly is carrier 68 is shifted laterally,which results in `sion of said frame.

-in F ig. 5.

clamped upon the reach member bythe bolts 40, thus making for simplicityin assembling the machine. j v

On lthe front side of the rear platform 16 I mount a carriage 68 on aslide 69. The slide swivelled connection at'7 6 with a pilot pin 77journaled in the rear end of a radius brace or strut 78 having itsforward end hinged to the rear side of the frame member 35. a

When the sub-frame 34 is adjusted to'any y position the strut 78 willbelikewise adjusted because of its' freedom in sliding or rotating onthevpilot pin 77. Likewise, by rotating the shaft 72 through the agencyof the han wheel 75 the chain 70 is adjusted whereby the a lateralshifting or swinging of the rear end of the frame because of the pivotalsuspen- The rear of thev subframe may be shifted laterally to anyposition by the/hand wheel 75 and its elevation andr inclinationcontrolled .bythe hand wheels 61.

A blade ring 79 is suspended from the sub-frame 34. The rear portion ofthe ring is supported by a transverse hanger bar 8O engaging under thelip of the ring, while the forward end is supportedas shown in detailThe front support includes a transverse bracket 81 von which the lip ofthe ring rests. A spring pressed plunger pin 82 carried bythebracket 81engages the teeth 83 on the lip of the ring and holds said ring againstrotation. To release the ring a wedge 84 slidable through the pin isoperated by a rod ,85 toelevate said pin from the teeth.

When the ring 79l is unlatched it may be` adjusted by means of a pinion86 which engages teeth 87 on the bottom of the ring. The pinion ismounted on a shaft 88 journaled in the bracket 81. This shaft isconnected by means of a universal 89 with an adjusting shaft 90 havingahand wheel 91 for operating .different parts, as well as modificationsand the same. A blade 92 is suspendedlby standards 93 from the ring andis adjusted thereby. It is obvious that the blade may be swung to anynecessary angle. f l

Various changes in the size andshape of the alterations, may be madewithin the scope of the'appended claims.

What I claim, is:

1. In a road machlne, a longitudinal pipev reach, a front axleLmountedin ground wheels, a support carried by the front axles and secured tothe front end of the pipe, a surface working tool carried by the pipe,an' elbow secured'to the rear end ofthe pipe, a rear platform connectedwith the elbow, and a rear axle mounted in ground wheels and supportingthe platform. a

2. Inv av road machine, .a longitudinal pipe reach, a front axle mountedin ground wheels, a support carried bythe front axles and secured to thefront end of the pipe, transverse hangers clamped around thepipe, linksadjustably carried by the hangers, a. blade carrier connected with saidlinks, a blade carried by said carrier, an elbow secured to the rearend'of the pipe, `a rear platfrom'connected with the elbow, and a rearaxle mounted in ground wheels and supporting the platform.

3. In a road machine, an upright front support mounted on wheels, anelongated pipe member clamped to the front support, a blade hangerclamped on the pipe member and held against rotation thereon, a rearplatform supported on ground wheels, and means for securing the pipemember to the platform. l 4. lIn a road machine, an upright frontsupport mounted on wheels, an elevated elon gated pipe member clampedtothe front support, a sub-frame having its forward end swiveled in thefront support, a hanger clamped against rotation on the pipe member and'adjustably supporting the rear end of the frame, a scraper blade carriedby the frame, a rear platfrom supported on ground wheels, and means forsecuring the pipe member to the platform.

5. In a road machine, an upright front support mounted on wheels, anelevated elonfwheels, means for securing the pipe member to theplatform, and adjusting means mounted 0n the platform and attached tothe subframe for shifting the same laterally'.

6. In a road machine, the combination with a wheel-supportedlongitudinal reach pipe, of a pair of laterally extending hangerbrackets bolted on each side of said reach, means on the bracketsengaging the reach pipe for preventing circumferential movement of theparts, rockers carried by the brackets, and a scraper blade suspended.from the rockers. 7. In a road machine, the combination with awheel-supported longitudinal reach-pipe, of a pair of laterally lextending hanger brackets bolted .on each side of said reach,

means on the brackets engaging the reach having means for clampingtogether-on a' single central support, rockers mounted in the'l bracketsand having segmental gears, worm` rockers, and'spring tensionedcompensating' means connected with the rockers for compensating the loadon the rockers.

8. As a sub-combination in a1road machine, a blade hanger including apair of brackets having means for clamping together on a single centralsupport, rockers mounted in the l brackets and havingsegmental gears,Worm screws in the brackets engaging said gears, and hanger loopspivoted on the ends of the rockers. v

9. As a sub-comblnation' 1n a road machine,

a blade hanger including' a pair of brackets v screws in the bracketsengaging said gears,

grooved segments integral with the rockers,

cables connected in said grooved segments,

and compensating springs to which said'.

cables are attached.

10. In a road machinea lon 'tudinal pipe i in ground reach, a. frontaxle mounte wheels, a support carried by the front axle and'securedv tothe front end of the pipe reach,va surface working tool carried by thesupporting said rear axle, a rear support .car-

ried by the rear axle and extending u wardly therefrom, the rear end ofthe reac being connected t the, rear support; a hanger clampedaround'the reach intermediate its ends, supporting elements suspendedfrom the hanger on each side of the reach, a tool frame extendinglongitudinally under the reach and having its vvfront end carried bypipe reach inrear of the front axle, an elbow and connected with ltheelbow.

. 11".4 In a roadmachine, an upright frontr l support mounted on wheels,an elongated vpipe l member secured to the front support, a blade hangerclamped on the pipe member and held against rotation thereon, a rearaxle mounted in wheels, andan upright support carried by the re'ar axleand secured to the rear end of the pipev member, whereby the pipe memlber -is elevated a substantial distance above the rear axle, theipevmember constituting secured to the rear end o f the pipe reach, anda rear axle mounted 1n ground wheels theI sole support or the hanger aswell as the sole connection between` the front and rear axles of themachine. l

`12. In a road machine, a front axle, a front I support carried'by theaxle and extending upwardly therefrom, front wheels support. 'in the`axle, a single central longitudinal l i tu ulafreach having its frontlend fastened tothe front support, arear axle, ground wheels supportinsaid rear axle,a rear support carried by t e rear axle and extending`lpwardly therefrom,the rear end of the reach connected to thereansupport, a hang- 3.

er c amped around the reach intermediate its ends, supportin elementssuspended from..

thehanger on eac side of -the reach, a tool,

frame supported by the lower ends ofthe elements, and asurfaceworkingtool carf ried-b the frame. l y

` 13. a road machine, afront axle, a front support carried by the axleand extending upwardly therefrom, front wheelsA supportililg the'axle, asingle central lon 'tudinaltub ar reach having--its--front en fastened'to the front support, a rear axle, ground wheels` j

